Storm sash for double hung windows



P. A. MUEHLMAN STORM SASH FOR DOUBLE HUNG WINDOWS Filed April 3 PatentedFeb. 29, 1944 STORM SASH FOR DOUBLE HUNG WINDOWS Paul A. Muehlman. Philadelphia, Pa., assignor to Frank C. Snedaker 8a 00., Inc., Philadelphia, Pa., a corporation of Pennsylvania Application April 3, 1942, Serial No. 437,469

Claims.

The principal objects of the present invention are to, provide a storm sash adapted for permanent application to double hung windows; to provide for slight variations in the size of the storm sash and of the double hung window structure; to provide a storm sash in which the bot: tom window frame is slidable into open and closed positions and in which both the top and bottom window frames are removable.

Other objects of the invention will appear from the following description at the end of which the invention will be claimed.

Generally stated the invention comprises a storm sash having a frame constructed to permit of permanent attachment to the weather face of a double hung window structure; two window frames each adapted for detachment from and attachment to the storm sash frame and of which the lower window frame is slidable therein; and a finger overlying the meeting rails of the top and bottom window frames and adapted to yield for the attachment and detachment of the bottom window frame.

The invention also comprises a generally rectangular open storm sash frame having at the weather face of its three adjacent sides a marginal outwardly extending shoulder and having on its house face and at its stiles portions of different depths providing between them stops and the deeper portions defining a seat and the shallower portions defining slideways; a top window frame cooperating with the stops and seat and provided at its stiles with an outwardly directed flange; a bottom window frame slidably cooperating with the slideways; tongue and groove joints between the top bar of the top window frame and the top bar of the storm frame and the bottom bar of the bottom window frame and the bottom bar of the storm sash frame; and spring fingers arranged at substantially the meeting rails of the window Figure 2A is a partial view of Figure 2 with the upper and lower window frames omitted.

Figure 3 is a vertical sectional view of Figure 1 illustrating the removal of the lower window frame.

Figure 4 is a. view similar to Figure 1 illustrating the lower window frame in partially open position; and

Figs. 5 and 6 are respectively sectional views taken on the lines 5-5 and 6-6 of Fig. 1.

Referring to the drawing, I indicates a generally rectangular open frame constructed for permanent attachment at the weather face of a double hung window structure indicated at a Fig. 2. The stiles and top bar of the frame I are provided at the weather face with an outwardly directed flange defining a shoulder 2, Figs. 5 and 6. The stiles of the frame I are provided on the house face with inwardly directed flanges 3 and 4 differing in thickness or depth and defining slideways 5 open on the house face of the frame and stops 6 midway of the frame. The top bar of the frame I is provided with an inwardly facing groove 6* and the bottom bar of the frame is provided with an inwardly directed lip I. There is a top window frame having its stiles andtop bar provided with a flange 8 of which the top part cooperates with the groove 6* in the top bar of the frame I and the side parts cooperate with the thinner part of the inwardly directed flanges 3 of the stiles of the frame I. The bottom rail of the top window sash is seated on the stops 6 of the frame I. There is a bottom window frame slidable on the ways 5 and having in its bottom bar a groove 9 cooperating with the rib I on the bottom bar of the storm sash frame. I0 are spring fingers attached on the house side on the stiles of the frame I and they cooperate with the stiles of the bottom window frame to position the same in respect to the open slideways 5 and to permit of the removal and attachment of the lower window frame as indicated in Figure 3. II indicates window catches on the stiles of the lower window frame and the stiles of the frame I for holding the house sash in open position. I2 is a molding covering the shoulders 2 and a portion of the double hung window structure a and also covering any space that may occur between them.

It may be remarked that the bottom window frame may be glazed or it may be provided with screening and lower window frames, one glazed alruid the other screened, may be used interchangea ly.

When the parts are assembled as indicated in Figure 1 the top part of the storm sash frame and the stops 6 provide a seat for the top window frame and the slideways 5 at thebottom. part of the storm sash I permit the lower window frame to be moved between them and the spring fingers I so as to open and close the lower window. The tongue and groove joints at the top of the upper window frame and the bottom of the lower window frame exclude the weather and permit of the removable of the top and bottom window frames, the spring fingers lfl yielding sufficiently for that purpose.

It will be obvious to those skilled in the art that modifications may be made in details of construction and arrangement without departing from the spirit of the invention which is not limited in respect to such matters.

I claim:

1. A storm sash comprising a generally rectangular open frame and having on its house face and at its stiles portions 3 and 5 of different depth providing between them stops 6, and the deeper portions 3 providing seats and the shallower portions slideways, the seats and the slideways lcoth open at the inner face of the frame, a top window frame provided on its stiles with an outwardly directed flange cooperating in overlapping relation with the seats and the bottom rail cooperating with the stops, a bottom window frame slidably cooperating with the slideways, tongue and groove joints between the top bar of the top window frame and of the storm sash frame and between the bottom bar of the bottom window frame and the bottom bar of the storm cash frame, the tongue and groove at the top bar of the top window frame and of the top bar of the storm sash frame and between the bottom bar of the bottom window frame and the bottom bar of the storm sash frame serving to the stopinward from the storm sash frame and the tongue and groove at the bottom bar of the bottom window frame and of the storm sash frame serving toprevent the bottom bar of the bottom window frame from falling inward off of the bottom bar of the storm sash frame, and spring fingers arranged substantially at the meeting rails of the window frames and attached to the inner face of the stiles of the storm sash frame and overlying both the window frames and serving to prevent them falling inward out of the sash frame.

2. The combination substantially as described in claim 1 and in which catches are provided between the stiles of the window frame and of the storm sash frame. I

3. A storm sash comprising in combination a generally rectangular frame constructed for permanent attachment at the weather face of a double hung window structure, thestiles and top bar of the frame provided on the inner side with inwardly directed flanges differing in depth and defining a slideway open on the house face of the frame and stops midway of the frame, the top bar of the frame provided with an inwardly facing groove and the bottom bar of the frame provided with an inwardly directed rib, a top window frame having its stiles and top bar provided with a marginal flange of which the top part cooperates with the groove in the top bar of the storm frame and the side parts of which cooperate with the thinner part of the inwardly directed flanges of the stiles of the storm frame, a bottom window frame slidable on the slideways and having in its bottom bar a groove cooperating with the rib on the bottom bar of the storm frame, and spring fingers on the house side of the stiles of the storm frame and cooperating with the stiles of the bottom window frame to position the same in respect to the slideways.

4. A storm sash having a frame adapted for permanent attachment to the weather face of a double hung window frame andhaving two window frames each adapted for detachment from and attachment to the storm sash frame and at the house side including, as an improvement, at the sides of the sash frame and on the outside portion thereof ribs of different thickness providing between them a stop and defining a groove open and ribless on the house side, the space between the side walls of the grooves being commensurate with the width of the window sashes so that the window sashes are mountable and demountable in the grooves with the top sash seated on the stop, tongue and groove provisions between the top rail of the storm sash frame and the top rail of the window frame and between the bottom rail of the storm sash frame and the bottom rail of the window frame, and a pair of yieldable fingers attached at one end to the sides of the storm sash frame and having their free, ends overlying the inner faces of the window frames at substantially the point of their meeting rails and serving with the tongues and grooves to normally keep the window sashes in the grooves and to yield to permit of their removal.

5. A storm sash having a frame adapted for permanent attachment to the weather face of a double hung window structure, two Window frames each adapted for detachment from and attachment to the storm sash and of which the lower window frame is slidable therein, a complemental groove and rib between the top of the upper window frame and the top of the storm sash frame and a stop for the upper window frame arranged on the stile of the storm window sash frame, a complemental groove and rib arranged between the bottom of the lower window frame and the bottom member of the storm sash frame, and a yieldable finger attached to the storm sash frame and overlying the inner face of the stile of the bottom window frame and adapted to yield for attachment and detachment of the latter.

PAUL A. MUEHLMAN. 

